Recent content by Sr. Robot

It was a bad U9850. Thank you

There was a short on the ram rails. Thank you very much.

it was pin 3 sorry, it was a typo.

pin 1 = 0.299 pin 3 = 0.399 it works on external display

It seems it had liquid damage but they its been cleaned

Hi, got a 820-01958 board that does not turn on. its drawing 0.05 amps every 2 secs at 5v PPBUS_G3H = 12.25 V PPDCIN_G3H = 5.10 V PP3V3_G3H = 3.3 V PP3V3_G3H_RTC = 3.3 V PP3V3_S5 = 0 V PM_SLP_S4_L = 0 V P5VXX_EN = 0 V PM_RSMRST_L = 0 V PP3V3_S5 and PP5V_S5 are not shorted.

Hi, got an 820-00928 with no signs of damage. It boots to OS but shows no image on LCD and no backlight. Tried known working LCD, same thing. It works on ext. display. EG_LCD_PWR_EN is 3.3v.

diode mode on L9580 is 0.333 L9080 also 0.333 (U9580 removed)

I found the short to be on PPBUS_G3H_SSD1_SNS. Removed U9580 and the short is gone. Does this mean dead SSD?

Hi, got 820-01041 board that doesnt boot. Its pulling 5v 0amps from all ports. Diode mode to ground on F7001 gave me 0.09. Removed F7001/F7002. Resistance to ground on system side is 24.4 ohms. On visual inspection i get nothing.

Reference codes: PFM006 and PPN001

Diagnostic mode says theres an error with the SMC

Hi, got an 820-00165 that did not turn on and had liquid damage in the U1930 area, components replaced and now it boots but fan goes full throttle after Apple logo loading bar is more than 70% and into the OS. Chant be changed with any fan control software. All temperature sensors are below 40...

SPI Bus Termination resistors all are OK and their traces. J6100 is cleaned, no change.

No change with clean ME